Patent · US Active

Method and system for determining image retention

US9485501B2 · kind B2 · utility

1Cited by

8References

19Claims

0Family size

Assignee

BARCO N.V. · BE

Inventors

Lode De Paepe · Evergem, BE
Goert F. M. Carrein · Moorslede, BE

Key dates

Filing date	Dec 30, 2011
Grant date	Nov 1, 2016
Priority date	—
Expiry date	Feb 7, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG09G2320/0693
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A system and method for measuring and quantifying image retention in a display device. The method involves displaying a test pattern (206, 306, 406, 606, 706) having at least one dark feature (210, 310, 410, 610) and at least one light feature (208, 308, 408, 608). The method further involves the displaying an analysis pattern (202, 302, 402, 602) having at one gradient feature (204, 304, 404, 604a-c) with a plurality of regions of different levels. The levels of the gradient feature may then be matched up with the levels displayed in the regions formerly displaying the dark feature (210, 310, 410, 610) and/or the light feature (208, 308, 408, 608). Thus, image retention may be determined by visual inspection.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.